# US 2022/0046575 A1 · Communication method, terminal, network device, and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0046575 A1 - Document ID: US20220046575A1 - Status: Published application - Kind: A1 - Application number: 17/508,564 - Filed: 2021-10-22 - Published: 2022-02-10 - Earliest claimed: 2019-04-23 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Chuili KONG; Gongzheng ZHANG; Yunfei QIAO; Yinggang DU - Web page: https://patentgrep.com/patent/US20220046575A1 ## CPC - H04W 56/0045: {compensating for timing error by altering transmission time} - H04B 7/1851: {Systems using a satellite or space-based relay (H04B7/18508, H04B7/18521 take precedence; providing specific services H04B7/18523 - H04B7/18576)} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract This application provides an example communication method. The example method includes a terminal device obtains a first message, where the first message includes target adjustment information. The terminal device obtains a second message, where the second message includes a timing advance (TA). The terminal device adjusts an uplink sending time based on the target adjustment information and the TA. ## Claims ### Claim 1 A communication method, comprising: obtaining, by a terminal device, a first message, wherein the first message includes target adjustment information; obtaining, by the terminal device, a second message, wherein the second message includes a timing advance (TA); and adjusting, by the terminal device, an uplink sending time based on the target adjustment information and the TA. ### Claim 2 (depends on 1) The method according to claim 1, wherein adjusting, by the terminal device, the uplink sending time based on the target adjustment information and the TA comprises: adjusting, by the terminal device, the uplink sending time based on the TA and a correspondence between the target adjustment information and a first subcarrier spacing, wherein the first subcarrier spacing is a subcarrier spacing used by the terminal device, and the correspondence is prestored in the terminal device. ### Claim 3 (depends on 1) The method according to claim 1, wherein the target adjustment information is an adjustment time of the uplink sending time corresponding to a second subcarrier spacing, and wherein adjusting, by the terminal device, the uplink sending time based on the target adjustment information and the TA comprises: in response to that when a subcarrier spacing of the terminal device is a third subcarrier spacing, determining, by the terminal device, a first time based on a preset relationship between the third subcarrier spacing and the second subcarrier spacing, wherein the first time is an adjustment time of the uplink sending time corresponding to the third subcarrier spacing; and adjusting, by the terminal device, the uplink sending time based on the first time and the TA. ### Claim 4 (depends on 1) The method according to claim 1, wherein obtaining, by the terminal device, the first message, comprises: receiving, by the terminal device, a system information block (SIB) 1 message, wherein the SIB 1 message includes the target adjustment information. ### Claim 5 (depends on 1) The method according to claim 1, wherein obtaining, by the terminal device, the first message, comprises: receiving, by the terminal device, a downlink control information (DCI) message, wherein the DCI message includes the target adjustment information. ### Claim 6 (depends on 1) The method according to claim 1, wherein obtaining, by the terminal device, the first message comprises: receiving, by the terminal device, a random access response message msg2, wherein the random access response message msg2 comprises a cyclic redundancy check (CRC) code, and the CRC code is scrambled by using a random access radio network temporary identifier (RA-RNTI) and the target adjustment information; and before adjusting, by the terminal device, the uplink sending time based on the target adjustment information and the TA, the method further comprises: performing, by the terminal device, a descrambling operation on the CRC code to obtain the target adjustment information. ### Claim 7 (depends on 1) The method according to claim 1, wherein obtaining, by the terminal device, the first message comprises: receiving, by the terminal device, a system information block (SIB) 1 message, wherein the SIB 1 message includes first target adjustment information; and receiving, by the terminal device, a downlink control information (DCI) message, wherein the DCI message includes second target adjustment information, and wherein adjusting, by the terminal device, the uplink sending time based on the target adjustment information and the TA comprises: adjusting, by the terminal device, the uplink sending time based on the first target adjustment information, the second target adjustment information, and the TA. ### Claim 8 (depends on 1) The method according to claim 1, wherein obtaining, by the terminal device, the first message comprises: obtaining, by the terminal device, a physical cell identifier (PCI), wherein the PCI is bound to an included angle α, and the included angle α is a horizontal included angle between a cell and a satellite; and before adjusting, by the terminal device, the uplink sending time based on the target adjustment information and the TA, the method further comprises: obtaining, by the terminal device, the target adjustment information through a calculation based on the included angle α and according to a preset formula. ### Claim 9 (depends on 1) The method according to claim 1, wherein obtaining, by the terminal device, the first message comprises: receiving, by the terminal device, a broadcast message sent by a satellite, wherein the broadcast message includes location information of the satellite; and before adjusting, by the terminal device, the uplink sending time based on the target adjustment information and the TA, the method further comprises: obtaining, by the terminal device, the target adjustment information based on location information of the terminal device and the location information of the satellite. ### Claim 10 (depends on 1) The method according to claim 1, wherein the method further comprises: after receiving a message msg3scheduled and transmitted for the first time, starting, by the terminal device, a first timer after a preset duration, wherein the first timer monitors a contention resolution message msg4. ### Claim 11 A communication method, comprising: sending, by a network device, a first message, wherein the first message includes target adjustment information; and sending, by the network device, a second message, wherein the second message includes a timing advance (TA), and the target adjustment information and the TA are used by a terminal device to adjust an uplink sending time. ### Claim 12 A terminal device, comprising: at least one processor coupled to a communication interface; the communication interface coupled to one or more memories; the one or more memories coupled to the at least one processor and storing computer-readable instructions for execution by the at least one processor to: obtain, through the communication interface, a first message, wherein the first message includes target adjustment information; obtain, through the communication interface, a second message, wherein the second message includes a timing advance (TA); and adjust an uplink sending time based on the target adjustment information and the TA that are obtained through the communication interface. ### Claim 13 (depends on 12) The terminal device according to claim 12, wherein the one or more memories store a correspondence between the target adjustment information and a first subcarrier spacing, wherein the first subcarrier spacing is a subcarrier spacing used by the terminal device, and wherein the one or more memories store the computer-readable instructions for execution by the at least one processor to: adjust the uplink sending time based on the correspondence between the target adjustment information and the first subcarrier spacing stored in the one or more memories. ### Claim 14 (depends on 12) The terminal device according to claim 12, wherein the target adjustment information is an adjustment time of the uplink sending time corresponding to a second subcarrier spacing, and wherein the one or more memories store the computer-readable instructions for execution by the at least one processor to: in response to that a subcarrier spacing of the terminal device is a third subcarrier spacing, determine a first time based on a preset relationship between the third subcarrier spacing and the second subcarrier spacing, wherein the first time is an adjustment time of the uplink sending time corresponding to the third subcarrier spacing; and adjust the uplink sending time based on the first time and the TA. ### Claim 15 (depends on 12) The terminal device according to claim 12, wherein the communication interface receives a system information block (SIB) 1 message, wherein the SIB 1 message includes the target adjustment information. ### Claim 16 (depends on 12) The terminal device according to claim 12, wherein the communication interface receives a downlink control information (DCI) message, wherein the DCI message includes the target adjustment information. ### Claim 17 (depends on 12) The terminal device according to claim 12, wherein the communication interface receives a random access response message msg2, wherein the random access response message msg2 comprises a cyclic redundancy check (CRC) code, and the CRC code is scrambled by using a random access radio network temporary identifier (RA-RNTI) and the target adjustment information; and wherein the one or more memories store the computer-readable instructions for execution by the at least one processor to perform a descrambling operation on the CRC code to obtain the target adjustment information. ### Claim 18 (depends on 12) The terminal device according to claim 12, wherein the communication interface receives a system information block (SIB) 1 message, wherein the SIB 1 message includes first target adjustment information; and the communication interface receives a downlink control information (DCI) message, wherein the DCI message includes second target adjustment information, and wherein the one or more memories store the computer-readable instructions for execution by the at least one processor to adjust the uplink sending time based on the first target adjustment information, the second target adjustment information, and the TA. ### Claim 19 (depends on 12) The terminal device according to claim 12, wherein the communication interface obtains a physical cell identifier (PCI), wherein the PCI is bound to an included angle α, and the included angle α is a horizontal included angle between a cell and a satellite, and wherein the one or more memories store the computer-readable instructions for execution by the at least one processor to obtain the target adjustment information according to the included angle α. ### Claim 20 (depends on 12) The terminal device according to claim 12, wherein the one or more memories are integrated into the at least one processor.